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Finding the Fourth Proportional to 672,935.54, 928,625.38 and 371,129.54

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Solution

The fourth proportional to 672,935.54, 928,625.38 and 371,129.54 is: 512,144.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,935.54 : 928,625.38 = 371,129.54 : x
  2. Step 2: Convert to fraction form
    672,935.54/928,625.38 = 371,129.54/x
  3. Step 3: Cross multiply
    672,935.54x = 928,625.38 × 371,129.54
  4. Step 4: Simplify right side
    672,935.54x = 344,640,304,540.77
  5. Step 5: Solve for x
    x = 344,640,304,540.77/672,935.54
  6. Step 6: Final answer
    x = 512,144.61

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.